Yep! The athletes foot powder is a great trick. Just a bit on a Qtip over the mold spot. This will keep the mold from coming back in that spot. I have 2 infertile eggs attached to good eggs in a clutch. I have already used the powder on one of them. Most of the time mold will not affect good eggs but I do it anyway just in case. To prevent mold from spreading to the good eggs. Wether it affects good eggs or not, I dont want it there lol